From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
When a Cow loses the Milk.
Inscribe the following words upon an iron spade: Mura, Martha, Marscha, T. X. T. Make a spade red hot, dip into the milk of such a cow three times, and three Fridays in succession repeat this. It is magnificent.
The grimoire Egyptian Secrets of Albertus Magnus lists this spell.